Added webpack in production dependecies to get around heroku error

client/package.json

@@ -70,6 +70,8 @@
     "ts-pnp": "1.1.4",
     "typescript": "^3.7.5",
     "url-loader": "2.1.0",
+    "webpack": "^4.41.5",
+    "webpack-cli": "^3.3.10",
     "webpack-dev-server": "3.2.1",
     "webpack-manifest-plugin": "2.1.1",
     "workbox-webpack-plugin": "4.3.1"
@@ -161,9 +163,7 @@
     "@material-ui/icons": "^4.5.1",
     "babel-loader": "^8.0.6",
     "body-parser": "^1.19.0",
-    "plop": "^2.5.3",
-    "webpack": "^4.41.5",
-    "webpack-cli": "^3.3.10"
+    "plop": "^2.5.3"
   },
   "proxy": "http://localhost:3001"
 }